- ARectangle
- BRhombus
- CSquare
- DParallelogram
Step-by-Step Solution
Rectangle has equal angles but not necessarily equal sides. Rhombus has equal sides but not necessarily equal angles. Square has both.
Answer: C) Square
Which quadrilateral has all sides equal AND all angles equal?
Class 8Understanding QuadrilateralsQuadrilaterals
Key idea: The quadrilateral family tree
Order from most general to most special:
```
Quadrilateral
├── Trapezium (one pair of parallel sides)
├── Kite (two pairs of adjacent equal sides)
└── Parallelogram (two pairs of parallel sides)
├── Rectangle (4 right angles)
│ └── Square (4 right angles + all sides equal)
└── Rhombus (4 equal sides)
└── Square (also)
```
A square is BOTH a rectangle and a rhombus — it's the most special kind of parallelogram. A rectangle and a rhombus are both parallelograms. Trapeziums and kites are quadrilaterals but not parallelograms.
```
Quadrilateral
├── Trapezium (one pair of parallel sides)
├── Kite (two pairs of adjacent equal sides)
└── Parallelogram (two pairs of parallel sides)
├── Rectangle (4 right angles)
│ └── Square (4 right angles + all sides equal)
└── Rhombus (4 equal sides)
└── Square (also)
```
A square is BOTH a rectangle and a rhombus — it's the most special kind of parallelogram. A rectangle and a rhombus are both parallelograms. Trapeziums and kites are quadrilaterals but not parallelograms.
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More Class 8 Understanding Quadrilaterals practice
Which quadrilateral is defined as having at least one pair of parallel sides?In a parallelogram ABCD, ∠A = 75°. Find ∠C.Which term describes a polygon in which at least one interior angle is greater than 180°?The sum of the exterior angles of any convex polygon (one at each vertex) is always:In parallelogram ABCD, ∠A = 120°. Find ∠B in degrees.